Grouping methods using "//@{" and "//@}" apparently doesn't work and
completely wrong documentation is used in this case, so document the two
overloads separately, as it's done for the other methods.
Closes #13884.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70416 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775